Which two characteristics of GMPLS are true? (Choose two)

Which two characteristics of GMPLS are true? (Choose two)
A . The LSP is established directionally through only one signaling messages
B . The control channel can terminate on different nodes types that the bearer channels span
C . OXCs manipulate wavelengths that bear the label implicitly
D . Two lights paths traversing the same fiber link can share the same wavelength on that link
E . LMP can be used by the natively photonic switches network element type only

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Answer: A, C